Improvement in repeating-watches



F. A. LANGE.

Repeating Watch. N0- 57,266. Patented Aug. 14', 1866.

U ITED STATES PATENT OEEIQE.

F. A. LANGE, OF GLASHUTTE, SAXONY.

IMPROVEMENT IN REPEATlNG-WATCHES.

To all whom it may concern;

Be it known that I, F. A. LANGE, of Glashutte, near Dresden, in Saxony, have invented an Improved Repeating-Works for Watches; and I hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which Figure 1 represents the works before they are adjusted to strike the time. Fig. 2 represents the works adjusted to strike the time. Fig. 3 shows the regulating-wheels O, D, and E between the plates A and B; and Fig. 4 shows a detached view of the hammer F and its spring X, the levers H and I, and their separating-spring R, the hour-wheel O, and its spring Y, and the escapement-lcver Z of the wheel 0.

The lever Gr ishung on a firm pivot, and acts upon the levers H and I in giving them their forward motion. These levers are joined together by their screw T and slot S, which act as a movable joint. The under lever, I, articulates through its rack L with the ratchet-pinion E, and through its striking rack K with the hammer F.

The striking-rack K is divided into eighteen teeth, twelve of which represent the hours. The other six are divided into groups of two teeth each, and represent the quarters, two beats being required to indicate a quarter.

On the knuckle of the lever I is placed the spring R, the office of which is to throw the levers apart after the proper hour has been struck. The timer or top lever, H, is provided with time-points M and N, which are acted upon by the hourwheel 0 and the quarterwheel P, in regulating the position of the levers H and I in striking the hour, by presenting the right number of the teeth of the rack K before the hammer F. I

The hammer F is made to slip up and down its staff b, Fig. 4, and is held in position by the spring X.

The hour-wheel O is scored with twentyfour teeth, and its hour-gage Q, with twelve teeth.

The quarter-wheel P is connected with the wheels of the watch, and through it is transmitted to the repeating-works the time marked by the watch.

The hour-wheel is turned by the quarterwheel P the space of one tooth every halfhour.

By pushing the lever G the levers H and I will be thrown forward, Fig. 2. The rack L of the lever I is geared with the pinion E, which is provided with a ratchet. The levers H and I moving forward, the hour-point M of the timer comes in contact with the time-gage Q at the proper hour to be struck, and stops the lever H in its forward motion; then the striking-lever I comes forward until it is covered by the lever H and so that the screw T rests against the front part of the slot S, and the lever H is raised by the pins 12 o of the lever I, and with it the top part of the hammer F. At the same moment thelittle spring It on the lever I catches the lever H, and holds it in position above and masking the lever I, and parts them the instant the quarter-point N touches the quarter-wheel P, and frees the hammer F from the action of the teeth of the rack K.

When the lever His raised by the pins 0; t it takes with it the hammer F, throwing it out of the groove a, Fig. 4, and bringing the point 0, Fig. 4, against the teeth of the rack K, so as to produce the striking motion, each tooth producing one stroke.

The rack L on the lever I, in its connection with the wheels E, D, and C, and the escapement-lever Z, regulates the action of the mainspring W.

After the time has been struck the quarter-point of the timer H touches the quarterwheel P, unlocks the spring It, which throws the levers H and I apart, it having indicated certainly the striking of the right number of quarters, the hammer drops and the rack K passes back without acting further on the hammer F, and the motion ceases.

That which I claim as my invention, and for which I desire Letters Patent of the United States, is-

1. The pusher G, in combination with the levers H and I, when constructed and operating substantially as described.

2. The lever I, in combination with the I pusher Gr, lever H, pinion E, and hammer F, when constructed and operating in the manner substantially as set forth.

3. TheleverH,when constructed with the projeotions Maud N and the slot S, substantially in the manner and for the purposes described.

4. The lever H, in combination with the lever 1, snail-wheel Q, quarter-wheel 1?, spring W, and spring B, when constructed and operating in the manner substantially as set forth.

5. The lever I, when construoted'withv the rack K, the rack L, the screw T, and the spring 9. The hammer F, in combination with the spring X, as described.

10. The wheels D and E, in combination with the levers G, H, and I, and the hammer F, when constructed substantially and for the purposes as set forth. I

11. The combination and arrangement of the pusher G, levers H and I, pinion E, and wheels D and O, the lever Z, springs R and W, hour-wheel O, snail-wheel Q, quarter-wheel P, spring Y, with the hammer F and spring X, substantially and for the purposes as set forth.

In witness whereof I have hereunto subscribed my name.

HEINRICH ADAM, GEORGE RocKsTRoH. 

